2. Basis of Presentation and Significant Accounting Policies: PASSUR Network (Details) - USD ($)			3 Months Ended		12 Months Ended
	Jan. 31, 2021	Oct. 31, 2020	Jan. 31, 2021	Jan. 31, 2020	Oct. 31, 2020
Impairment Of Long Lived Assets, Held For Use (Rounded)					$ 9,874,000
PASSUR Network Parts Used in Repairs			$ 0	$ 9,300
Depreciation of PASSUR Network costs			$ 0	$ 226,000
PASSUR NETWORK, Net (Rounded)	$ 0	$ 0
Passur Network 1
Impairment Of Long Lived Assets, Held For Use (Rounded)					3,565,000
Impairment of Leasehold					$ 175,000